/Engine/Plugins/Experimental/MeshModelingToolsetExp/Source/MeshModelingToolsEditorOnlyExp/Public/BspConversionTool.h
Determines whether the passed in pointer is a valid convertible brush. Safe to call with nullptr. Considers Settings->bIncludeVolumes.
bool IsValidConversionTarget ( const [ABrush](API\Runtime\Engine\Engine\ABrush) * Brush ) const